Monitor improved in a tilting and combining structure

ABSTRACT

A monitor has a monitor main body and a base member to support the monitor main body. The monitor includes a link member disposed between the monitor main body and the base member, a base hinge coupling the link member, which is to be rotated within a predetermined angle against the base member, with the base member, and a monitor hinge coupling the monitor main body, which is to be rotated against the link member, with the link member. The monitor includes an auxiliary link member to link the rotation of the link member against the base member with the rotation of monitor main body, and a base bracket combined to the base member to allow the base member to be installed on an inclined plane.

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of Korean Application No.2001-71860, filed Nov. 19, 2001, Application No. 2002-27683, filed May20, 2002, and Application No. 2002-56429 filed Sep. 17, 2002, in theKorean Industrial Property Office, the disclosures of which areincorporated herein by reference.

BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates in general to a monitor, and moreparticularly, to a monitor improved in tilting structure of the monitoragainst a base member, and improved in combining structure of the basemember and an inclined plane.

[0004] 2. Description of the Related Art

[0005] As shown in FIG. 1, a conventional monitor includes a base member201 laid on a horizontal plane, a monitor main body 202 to display apicture thereon, and a link member 210 to link the base member 201 withthe main body 202.

[0006] A lower part of the link member 210 is rotatably combined to thebase member 201 by a pair of fixing brackets 204 and 206, and an upperpart of the link member 210 is fixed with the main body 202.

[0007] Thus, along a direction of an arrow “A” in FIG. 1, the linkmember 210 is vertically rotated against the base member 201, but themain body 202 cannot be tilted against the link member 210. Therefore,with the conventional monitor, it is inconvenient to adjust an angle ofthe main body 202 as necessary.

[0008] Contrary to the monitor shown in FIG. 1, it is possible that theupper part of the link member 210 is rotatably combined to the main body202, and the lower part of the link member 210 is fixed with the basemember 201. Accordingly, the angle of the main body 202 is moreefficiently adjusted.

[0009] As computer systems rapidly spread, demand of various monitorcapabilities are also being rapidly increased. In relation to theincreased demand of the monitor, there has been provided an arm stand tosupport the monitor, which is manufactured separately from the monitorand combined to the monitor, to thereby meet a user's preference. Acombining structure of the monitor and the arm stand has been regulatedby VESA (VIDEO ELECTRONIC STANDARD ASSOCIATION).

[0010] However, in the conventional monitor, because the base member 210must be laid on the horizontal plane, it is impossible to install themonitor onto an inclined plane such as a wall, the arm stand, etc.Because the main body 202 is not folded to the base member 201, themonitor is packed in a state as shown in FIG. 1, or in a state that thelink member 210 is folded to the base member, which is not shown. Thus,a packing volume of the monitor cannot be decreased, thereby increasingcosts to keep and carry the monitor. Furthermore, if regulationsregarding the angle adjustment of the main body 202 are different invarious nations, it is difficult to adaptively meet regulationrequirements for the angle adjustment.

SUMMARY OF THE INVENTION

[0011] Accordingly, it is an object of the present invention to providea monitor, in which a base member is installed onto an inclined planesuch as a wall, an arm stand, etc., and more particularly, to provide amonitor which is easily installed onto various arm stands according toVESA standards.

[0012] Another object of the present invention is to provide a monitorwhich properly adjusts a tilting angle of a main body against a basemember, and decrease costs to keep and carry the monitor by minimizingthe packing volume thereof.

[0013] Additional objects and advantages of the invention will be setforth in part in the description which follows and, in part, will beobvious from the description, or may be learned by practice of theinvention.

[0014] The foregoing and other objects of the present invention areachieved by providing a monitor having a monitor main body and a basemember to support the monitor main body, and including a link memberdisposed between the monitor main body and the base member. The monitorincludes a base hinge coupling the link member, which rotates within apredetermined angle against the base member, with the base member. Themonitor also includes a monitor hinge coupling the monitor main body,which rotates against the link member, with the link member and anauxiliary link member to link the rotation of the link member againstthe base member with the rotation of the monitor main body. The monitorincludes a base bracket combined to the base member and allowing thebase member to be installed on an inclined plane.

[0015] According to an aspect of the invention, the base bracket isdetachably combined to the base member and includes hooks to hook tohook holders provided in the base member.

[0016] According to an aspect of the invention, the base bracketincludes first combining holes to install the base bracket on theinclined plane.

[0017] According to an aspect of the invention, to combine the basebracket and the link member, the base bracket includes second combiningholes, and the link member includes third combining holes correspondingto the second combining holes.

[0018] According to an aspect of the invention, the second combiningholes of the base bracket and the third combining holes of the linkmember are formed according to the VESA standards.

[0019] According to another aspect of the invention, the monitor furtherincludes first and second fixing brackets spaced from each other at apredetermined distance and installed on the base member. The base hingeincludes first and second base hinge parts to rotatably combine oppositesides of a lower end part of the link member to the first and secondfixing brackets.

[0020] According to an aspect of the invention, the first base hingepart includes a first pin accommodating part formed on a side of thelink member, a first boss accommodating part formed on the first fixingbracket and having a noncircular section, and a first hinge pin having afirst end rotatably inserted in the first pin accommodating part and asecond end fitted into the first boss accommodating part.

[0021] According to an aspect of the invention, the first fixing bracketincluding a spring supporting part protruded from an inside thereoftoward the second fixing bracket. The spring supporting part has atorsion spring placed thereon, elastically acting in an oppositedirection to a downward rotation of the link member against the basemember.

[0022] According to an aspect of the invention, the second base hingepart includes a second pin accommodating part formed on a side of thelink member, a first link supporting part coupled to the second fixingbracket and formed with a second boss accommodating part therein, asecond hinge pin having a first end rotatably inserted in the second pinaccommodating part, and a second end engaged with the second bossaccommodating part of the first link supporting part.

[0023] According to another aspect of the invention, at least one of thefirst and second base hinge parts has a tilt resticting device placedthereon to restrict the rotation of the link member against the basemember within a predetermined angle range.

[0024] According to an aspect of the invention, the tilt restictingdevice includes first and second stoppers formed on opposite sides ofthe link member adjacent to the first and second pin accommodating partto face each other. The tilt restricting device also includes a pair ofprojections provided on the first and second boss accommodating partsand selectively engaged with the first and second stoppers according toa rotation direction of the link member.

[0025] According to yet another aspect of the invention, the monitorfurther includes a supporter combined to the monitor main body. Themonitor hinge includes first and second monitor hinge parts to rotatablycombine opposite sides of an upper end part of the link member to thesupporter.

[0026] According to an aspect of the invention, the first monitor hingepart includes a first hinge accommodating part grooved on one side ofthe supporter, a first hinge holder formed on one side of the upper endpart of the link member, and an accommodating part cover placed on anopening of the first hinge accommodating part in a state that the firsthinge holder is arranged in the first hinge accommodating part.

[0027] According to an aspect of the invention, the second monitor hingepart includes a third pin accommodating part formed on the other side ofthe supporter, a second hinge accommodating part formed on the otherside of the upper end part of the link member, a second hinge holderrotatably inserted in the second hinge accommodating part from anoutside of the link member. The second monitor hinge part also includesa second link supporting part including the second hinge holder, and athird boss accommodating part formed inside the second hinge holder. Thesecond monitor hinge part includes a third hinge pin having a first endrotatably inserted in the third pin accommodating part of the supporterand a second end fitted into the third boss accommodating part of thesecond link supporting part.

[0028] According to an aspect of the invention, the second monitor hingepart is provided with a monitor angle restricting device to restrict atilt of the monitor main body against the link member within apredetermined angle range.

[0029] According to an aspect of the invention, the monitor anglerestricting device includes a third stopper of an arced shape protrudedfrom an opening of the third pin accommodating part formed on thesupporter and a rotation-restricting washer put on the third hinge pinand having a projection to be selectively engaged with the third stopperaccording to a rotation direction of the monitor main body. The monitorangle restricting device also includes a flat spring combined to a sideadjacent to the third pin accommodating part of the supporter, andrestricting a rotation of the supporter by pressing the projection ofthe rotation-restricting washer.

[0030] According to an aspect of the invention, the flat spring includesa projection elastically deformed and fastened to the other side of thesupporter.

[0031] According to yet another aspect of the invention, the auxiliarylink member is provided in pairs in parallel with each other andcombined to the first and second link supporting parts.

[0032] According to an aspect of the invention, on each of the first andsecond link supporting parts are provided a plurality of pin holesspaced from each other at a predetermined distance. On opposite ends ofeach auxiliary link member are formed through holes to be communicatedwith the pin holes, respectively, and to the through holes and the pinholes are inserted link fixing pins.

[0033] According to another aspect of the invention, on the link memberis provided a cable accommodating part to accommodate cables connectingat least one first cable port provided in the base member with at leastone second cable port connected to the monitor main body. The firsthinge holder and the first hinge accommodating part of the supporter isprovided with a cable accommodating groove to accommodate the cables.

[0034] According to an aspect of the invention, the monitor main body isfolded on the base member, and the link member is accommodated in a linkmember accommodating part formed in a middle of a surface of the basemember.

[0035] According to an aspect of the invention, the second linksupporting part provided in the upper end part of the link member isrotated by the auxiliary link member when the link member is rotated.The monitor main body is tilted together with the second link supportingpart at a same angle.

[0036] The foregoing and other objects of the present invention areachieved by providing a monitor having a main body and a base membersupporting the main body including a link member disposed between themain body and the base member, a base hinge coupling the link member, tobe rotated within a predetermined angle against the base member, withthe base member, a monitor hinge coupling the main body, to be rotatedagainst the link member, with the link member, and an auxiliary linkmember linking the rotation of the link member against the base memberwith the rotation of monitor main body. The monitor further includes apair of fixing brackets spaced from each other at a predetermineddistance and installed on the base member. The base hinge includes firstand second base hinge parts rotatably combining a lower end part of thelink member to the pair of fixing brackets.

[0037] According to an aspect of the invention, the first base hingepart includes a first pin accommodating part formed on one side of thelower end part of the link member, a boss accommodating part formed onthe first fixing bracket and having a noncircular section, and a firsthinge pin having a first end rotatably inserted in the first pinaccommodating part and a second end fitted into the boss accommodatingpart.

[0038] According to an aspect of the invention, the first hinge pin isplaced a first torsion spring having a first end coupled to the one sideof the lower end part of the link member and a second end coupled to thefirst fixing bracket, and elastically acting in an opposite direction toa downward rotation of the link member against the base member. Thus,the first torsion spring allows the link member to be positioned inplace.

[0039] According to another aspect of the invention, the second basehinge part includes a second pin accommodating part formed on the otherside of the lower end part of the link member, a first link supportingpart coupled to the second fixing bracket and formed with a splineaccommodating part and, a first hinge pin having a first end rotatablyinserted in the second pin accommodating part and a second end engagedwith the spline accommodating part of the first link supporting part.

[0040] According to an aspect of the invention, the second base hingepart is placed a rotation-angle restricting device to restrict therotation of the link member against the base member within apredetermined angle range.

[0041] According to an aspect of the invention, the rotation-anglerestricting device includes a pair of first stoppers formed at a side ofthe lower end part of the link member adjacent to the second pinaccommodating part to face each other, and a first rotation-restrictingwasher placed on the second hinge pin and having a pair of projectionsto be selectively engaged with the pair of first stoppers according to arotation direction of the link member. The first rotation-restrictingwasher is fitted to the second hinge pin.

[0042] According to yet another aspect of the invention, the monitorfurther includes a supporter combined to the main body. The monitorhinge includes first and second monitor hinge parts rotatably combiningan upper end part of the link member to the supporter.

[0043] According to an aspect of the invention, the first monitor hingepart includes a third pin accommodating part formed on one side of thesupporter, a fourth pin accommodating part formed on one side of theupper end part of the link member, and a third hinge pin having endsinserted in the third and fourth pin accommodating parts, respectively.

[0044] According to an aspect of the invention, the second monitor hingepart includes a fifth pin accommodating part formed on the other side ofthe supporter, a sixth pin accommodating part formed on the other sideof the upper end part of the link member and, a second link supportingpart rotatably inserted in the sixth pin accommodating part from anoutside of the link member and formed with a spline accommodating part.The second monitor hinge part also includes a fourth hinge pin having afirst end fitted into the fifth pin accommodating part of the supporter,and a second end engaged with the spline accommodating part of thesecond link supporting part.

[0045] According to another aspect of the invention, the second monitorhinge part is provided a monitor angle restricting device to restrictthe rotation of the main body against the link member within apredetermined angle range.

[0046] According to an aspect of the invention, the monitor anglerestricting device includes a second stopper of an arced shape protrudedfrom one side of the supporter adjacent to the fifth pin accommodatingpart, a second rotation-restricting washer placed on the fourth hingepin and having a projection to be engaged with the second stopperaccording to the rotation direction of the main body, and a thirdstopper combined to the one side of the supporter and locked on andreleased from the projection of the second rotation-restricting washer.

[0047] According to an aspect of the invention, the monitor furtherincludes a second torsion spring combined to the one side of thesupporter, and elastically biasing the third stopper in a direction inwhich the third stopper is engaged with the projection of the secondrotation-restricting washer.

[0048] According to another aspect of the invention, the monitor furtherincludes a spacer provided between the second link supporting part andthe second rotation-restricting washer.

[0049] According to an aspect of the invention, the monitor furtherincludes an auxiliary link member linking the rotation of the linkmember against the base member with the rotation of the main body.

BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above and other objects and advantages of the presentinvention will become apparent and more readily appreciated from thefollowing description of the preferred embodiments, taken in conjunctionwith the accompany drawings of which:

[0051]FIG. 1 is a perspective view illustrating a rear of a conventionalmonitor;

[0052]FIG. 2 is a perspective view illustrating a rear of a monitor,according to an embodiment of the present invention;

[0053]FIG. 3 is a perspective view illustrating the rear of the monitorof FIG. 2, in which a base member and a base bracket are separated;

[0054]FIG. 4 is a partially exploded perspective view of a link assemblyand the base member of the monitor in FIG. 2;

[0055]FIG. 5 is an enlarged perspective view of the link assembly ofFIG. 4;

[0056]FIG. 6 is an exploded view of the link assembly of FIG. 5;

[0057]FIGS. 7A through 7D are partially enlarged side views of themonitor according to an operating state thereof;

[0058]FIGS. 8A through 8C are partially enlarged sectional viewsillustrating a base hinge part according to the operating state of themonitor in FIGS. 7A through 7D;

[0059]FIGS. 9A through 9D are partially enlarged sectional viewsillustrating a monitor hinge part according to the operating state ofthe monitor in FIGS. 7A through 7D; and

[0060]FIG. 10 is a schematic view illustrating cables arranged in a linkmember of the monitor according to the present invention;

[0061]FIGS. 11A and 11B are side views illustrating the monitor beingmounted on a wall;

[0062]FIGS. 12A and 12B are side views illustrating the monitor beingmounted on an arm stand; and

[0063]FIG. 13A is a perspective view of a rear of a monitor, accordingto another embodiment of the present invention;

[0064]FIG. 13B is a partially enlarged perspective view of a linkassembly of the monitor as shown in FIG. 13A;

[0065]FIG. 13C is an exploded perspective view of the link assembly asshown in FIG. 13B;

[0066]FIGS. 14 through 17 are partially enlarged side views illustratingan operating state of the monitor as shown in FIG. 13A;

[0067]FIGS. 18A through 18C are partially enlarged sectional viewsillustrating a base hinge part according to the operating state of themonitor corresponding to FIGS. 14 through 17;

[0068]FIGS. 19A through 19D are partially enlarged sectional viewsillustrating a monitor hinge part according to the operating state ofthe monitor corresponding to FIGS. 14 through 17; and

[0069]FIG. 20 is a perspective view illustrating a rear of a base memberof the monitor, according to another embodiment of the presentinvention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0070] Reference will now be made in detail to the present preferredembodiments of the present invention, examples of which are illustratedin the accompanying drawings, wherein like reference numerals refer tolike elements throughout.

[0071] As shown in FIGS. 2 and 3, a monitor according to an embodimentof the present invention includes a base member 130 laid on apredetermined horizontal plane and a monitor main body 120 having ascreen 120 a to display a picture. The monitor also includes a linkassembly 1 linking the base member 130 with the monitor main body 120and a base bracket 140 having a first side combined to a rear of thebase member 130 and a second side combined to an inclined planeincluding a vertical plane such as a wall, an arm stand, etc.

[0072] The base bracket 140 includes a plurality of hooks 141 providedin the first side combined to the rear of the base member 130, aplurality of first combining holes 143 to combine with the inclinedplane such as a wall, and a plurality of second combining holes 145 tocombine with an arm stand according to VESA.

[0073] As shown in FIGS. 4 through 6, the base member 130 of the monitorincludes a base supporting part 133 formed with a plurality of basecombining holes 133 a to which first and second fixing brackets 4 and 6(to be described later) are combined, an upper base cover 131 providedon an upper part of the base supporting part 133, and a lower base cover132 provided on a lower part of the base supporting part 133. Further,the base member 130 includes a link member accommodating part 135 formedin a middle of a surface thereof and accommodating the link assembly 1,and a plurality of port receiving parts 133 b to receive a plurality offirst cable ports 151 of a cable assembly 150 (to be described later).Further, on a surface of the lower base cover 132 is formed a pluralityof hook holders 132 a (see FIG. 3) to hold the hooks 141 of the basebracket 140. Herein, the base supporting part 133 formed with the portreceiving parts 133 b and the base combining holes 133 a may beincorporated with the lower base cover 132 or the upper base cover 131.

[0074] The cable assembly 150 includes the plurality of first cableports 151 such as a cable port and a power port, which are fastened tothe port receiving parts 133 b and connected to a computer main body(not shown). The cable assembly 150 also includes a second cable port152 connected to the monitor main body 120, and a cable 153 accommodatedin a link member 10 to connect the first cable port 151 and the secondcable port 152.

[0075] The link assembly 1 includes the link member 10 provided betweenthe monitor main body 120 and the base member 130, an upper link membercover 2 provided on an upper part 10 b of the link member 10, a lowerlink member cover 3 provided on a lower part 10 a of the link member 10,a base hinge 20 rotatably connecting the lower part 10 a of the linkmember 10 with the base member 130, and a monitor hinge 70 rotatablyconnecting the upper part 10 b of the link member 10 with the monitormain body 120. Herein, the lower link member cover 3 is formed with aplurality of third combining holes 3 a corresponding to the plurality ofsecond combining holes 145 of the base bracket 140 so as to combine withan arm stand 170 (to be described later, see FIG. 12).

[0076] The link member 10 rotates against the base member 130 within apredetermined angle range. The range of the tilting angle may bedetermined based on regulation requirements in various nations, forexample, 0° through 65°.

[0077] The base hinge 20 is combined to the first and second fixingbrackets 4 and 6 which are spaced from each other at a predetermineddistance and fastened onto the base supporting part 133 of the basemember 130 with bolts 7. The base hinge 20 includes first and secondbase hinge parts 30 and 40 rotatably connecting opposite sides of thelower part 10 a of the link member 10 with the first and second fixingbrackets 4 and 6, respectively. Further, the first fixing bracket 4includes a spring supporting part 4 a protruding from the first fixingbracket 4 toward the second fixing bracket 6.

[0078] The first base hinge part 30 includes a first pin accommodatingpart 31 formed on a right side of the lower part 10 a of the link member10, a first boss accommodating part 32 formed in the spring supportingpart 4 a of the first fixing bracket 4, and a first hinge pin 33 havingfirst and second ends 33 a and 33 b coupled to the first pinaccommodating part 31 and the first boss accommodating part 32,respectively. The first end 33 a of the first hinge pin 33 is rotatablyinserted into the first pin accommodating part 31, and the second end 33b thereof is nonrotatively fitted into the first boss accommodating part32. Thus, the first end 33 a of the first hinge pin 33 and the first pinaccommodating part 31 have circular shaped sections, and the second end33 b of the first hinge pin 33 and the first boss accommodating part 32have noncircular shaped sections.

[0079] A torsion spring 35 is put on the spring supporting part 4 a ofthe first fixing bracket 4. The torsion spring 35 has one end supportedby the right side of the lower part 10 a of the link member 10 on whichthe first pin accommodating part 31 is formed, and the other endsupported by the first fixing bracket 4. Further, the torsion spring 35has elasticity acting in an opposite direction to downward tilting ofthe link member 10 against the base member 130. However, a restoringforce of the torsion spring 35 is too weak to restore the link member 10to an original position after the link member 10 is downwardly pressedtoward the base member 130. Thus, when the link assembly 1, under astate as shown in FIG. 2, is downwardly pressed toward the base member130, the link assembly 1 is slowly moved by the elasticity of thetorsion spring 35.

[0080] The second base hinge part 40 includes a second pin accommodatingpart 41 formed on a left side of the lower part 10 a of the link member10, a first link supporting part 42 incorporated with the second fixingbracket 6 and formed with a second boss accommodating part 42 a therein,and a second hinge pin 44 having first and second ends 44 a and 44 bcoupled to the second pin accommodating part 41 and the second bossaccommodating part 42 a, respectively. Like the first hinge pin 33, thefirst end 44 a of the second hinge pin 44 has a circular shaped sectionand is rotatably inserted into the second pin accommodating part 41. Thesecond end 44 b thereof is irrotatively fitted into the second bossaccommodating part 42 a.

[0081] The first and second base hinge parts 30 and 40 are provided withtilt restricting devices 50 a and 50 b, respectively, to restrict thetilt of the link member 10 against the base member 130 within apredetermined range. Herein, the tilt restricting devices 50 a and 50 bare designed to be fit for tilting angle regulations according to VESA.

[0082] As shown in FIGS. 6 and 8A, the tilt resticting device 50 aincludes a pair of first stoppers 51 a and a pair of first projections52 a. Herein, the pair of first stoppers 51 a is formed by cutting a fanshaped groove in the lower part 10 a of the link member 10 around thefirst pin accommodating part 31 to face each other. The pair of firstprojections 52 a is provided around the first boss accommodating part 32accommodating the first hinge pin 33, and is selectively engaged withthe pair of first stoppers 51 a according to a tilting direction of thelink member 10.

[0083] Similarly, the tilt resticting device 50 b includes a pair ofsecond stoppers 51 b and a pair of second projections 52 b. Herein, thepair of second stoppers 51 b is formed by cutting a fan shaped groove inthe lower part 10 a of the link member 10 around the second pinaccommodating part 41 to face each other. The pair of second projections52 b is provided around the second boss accommodating part 42 aaccommodating the second hinge pin 44, and is selectively engaged withthe pair of second stoppers 51 b according to the tilting direction ofthe link member 10.

[0084] Therefore, if the link member 10 is downwardly pressed againstthe base member 130, the link member 10 rotatably combined to the firstand second hinge pins 33 and 44 is downwardly tilted until the first andsecond stoppers 51 a and 51 b are each engaged with the first and secondprojections 52 a and 52 b of the first and second boss accommodatingparts 32 and 42 a at a downward-tilting limit position (see FIGS. 8B and8C).

[0085] To the contrary, if the link member 10 is upwardly pressed fromthe base member 130, the link member 10 is upwardly tilted by the firstand second hinge pins 33 and 44 until the first and second stoppers 51 aand 51 b are each engaged with the first and second projections 52 a and52 b at an upward-tilting limit position (see FIG. 8A).

[0086] Thus, the tilting angle of the link member 10 against the basemember 130 may be determined by the tilt resticting devices 50 a and 50b, which include the pair of first stoppers 51 a, the pair of secondstoppers 51 b, the pair of first projections 52 a, and the pair ofsecond projections 52 b. Therefore, if a rotatable angle of the linkmember 10 is different in various nations, the rotatable angle of thelink member 10 may be properly designed as necessary by altering sizesof the projections 52 a, 52 b and the stoppers 51 a, 51 b.

[0087] At the upper part 10 b of the link member 10 is provided themonitor hinge 70 (see FIG. 5) by which the monitor main body 120 istilted against the link member 10 within a predetermined angle range.The range of the tilting angle may be properly determined based onregulation requirements in various nations, for example, −5° through30°.

[0088] The monitor hinge 70 includes first and second monitor hingeparts 80 and 90, respectively, rotatably combined to opposite sides of asupporter 55 fastened to the monitor main body 120 with bolts 57.

[0089] The first monitor hinge part 80 (see FIGS. 5 and 6) includes afirst hinge holder 83 protruding from an upper right part of the linkmember 10 in a left direction, a first hinge accommodating part 81grooved on a right side of the supporter 55 and having an upwardlyopening, and an accommodating part cover 55 a covering the opening ofthe first hinge accommodating part 81 in a state that the first hingeholder 83 is arranged in the first hinge accommodating part 81. Thus,the first hinge holder 83 of the link member 10 is arranged in the firsthinge accommodating part 81 of the supporter 55, and then the opening ofthe first hinge accommodating part 81 is covered with the accommodatingpart cover 55 a, thereby allowing the monitor main body 120 to be tiltedagainst the link member 10.

[0090] The second monitor hinge part 90 (see FIGS. 5 and 6) includes athird pin accommodating part 91 formed on a left side of the supporter55, a second hinge accommodating part 92 formed at a left side of theupper part 10 b of the link member 10, a second hinge holder 93 crotatably inserted into the second hinge accommodating part 92, and athird boss accommodating part 93 a formed at a right side of the secondhinge holder 93 c. The second monitor hinge part 90 also includes asecond link supporting part 93 including the second hinge holder 93 cand the third boss accommodating part 93 a and a third hinge pin 94having a first end 94 a rotatably fitted in the third pin accommodatingpart 91 of the supporter 55 and a second end 94 b matched to the thirdboss accommodating part 93 a of the second link supporting part 93.

[0091] The third hinge pin 94 includes the first end 94 a rotatablyinserted in the third pin accommodating part 91 formed on the left sideof the supporter 55, and the second end 94 b having a noncircularsection and matched to the third boss accommodating part 93 a of thesecond link supporting part 93. Herein, the third hinge pin 94 should berotatably combined to the third pin accommodating part 91 of thesupporter 55 by a force stronger than torque due to a weight of themonitor main body 120. Therefore, in order to rotate the monitor mainbody 120 against the base member 10, a predetermined force is required.On the other hand, the second hinge holder 93 c of the second linksupporting part 93 combined to third hinge pin 94 is rotatably combinedwith the second hinge accommodating part 92, and a rotation between thesecond hinge holder 93 c of the second link supporting part 93 and thesecond hinge accommodating part 92 is achieved by auxiliary link members100 and 110 (to be described later) which are combined to and gearedwith the second link supporting part 93.

[0092] The second monitor hinge part 90 is provided with a monitor anglerestricting device 60 to restrict a tilting angle of the monitor mainbody 120 against the link member 10 within a predetermined angle range.The monitor angle restricting device 60 is designed to be fit for therotatable angle of the monitor main body 120 against the link member 10.

[0093] The monitor angle restricting device 60 (see FIG. 6) includes anarc-shaped third stopper 61 and, protrudes from the left side of thesupporter 55 adjacent to the third pin accommodating part 91. Themonitor angle restricting device 60 also includes a rotation-restrictingwasher 62 placed on the third hinge pin 94 and having a projection 62 ato be engaged with the third stopper 61 according to the rotationdirection of the monitor main body 120. The monitor angle restrictingdevice 60 includes a flat spring 63 combined to the left side of thesupporter 55 to restrict the rotation of the supporter 55 by pressingthe projection 62 a.

[0094] On the rotation-restricting washer 62 is formed anoncircular-shaped through hole 62 b. The through hole 62 b of therotation-restricting washer 62 is fixedly matched to the third hingedpin 94, and therefore the rotation-restricting washer 62 is rotatedtogether with the third hinge pin 94.

[0095] The flat spring 63 has a projection 63 a protruded therefrom andelastically deformed by contact with the projection 62 a of therotation-restricting washer 62. The flat spring 63 also has a verticallyextended part fastened to the left side of the supporter 55 with bolts67.

[0096] Thus, when the monitor main body 120 is forwardly pressed againstthe link member 10, the supporter 55 combined to the monitor main body120 is forwardly rotated on the first hinge holder 83 and the thirdhinge pin 94 at a predetermined angle until the projection 62 a of therotation-restricting washer 62 combined to the third hinge pin 94 isengaged with one side of the third stopper 61 formed in the left side ofthe supporter 55 (see FIG. 9A). Oppositely, when the monitor main body120 is backwardly pressed against the link member 10, the supporter 55combined to the monitor main body 120 is backwardly rotated on the firsthinge holder 83 and the third hinge pin 94 at a predetermined angleuntil the projection 62 a of the rotation-restricting washer 62 combinedto the third hinge pin 94 is engaged with the projection 63 a of theflat spring 63 provided in the left side of the supporter 55 (see FIG.9B).

[0097] Therefore, if an allowable tilting angle of the monitor main body120 varies in different nations, the tilting angle of the main body 120may be properly designed as necessary by altering sizes of theprojection 62 a and the third stopper 61, and by altering a position ofthe flat spring 63.

[0098] Thus, folding the monitor main body 120 to the base member 130 inparallel is performed by pressing the monitor main body 120, which isstopped in a state that the projection 62 a of the rotation-restrictingwasher 62 is engaged with the projection 63 a of the flat spring 63fastened to the supporter 55, backwardly enough to deform the projection63 a of the flat spring 63 elastically, thereby allowing the projection62 a of the rotation-restricting washer 62 to rotate over the projection63 a of the flat spring 63 and to be engaged with the other side of thethird stopper 61 (see FIGS. 9C and 9D).

[0099] Oppositely, restoring the folded monitor main body 120 to anoriginal position is performed by pressing the monitor main body 120forwardly in reverse to the order described above.

[0100] With this configuration, the link member 10 rotates against thebase member 130 at a predetermined angle, and the monitor main body 120rotates against the link member 10 at a predetermined angle. Further,the link member 10 and the monitor main body 120 may not be individuallyrotated. For example, the monitor main body 120 may be rotated at thepredetermined angle (e.g., like the foregoing restricted tilting angle)by interlocking with the rotation of the link member 10 against the basemember 130.

[0101] To accomplish the above structure, the present invention includesauxiliary link members 100 and 110 to link the rotation of the linkmember 10 against the base member 130 with the rotation of the monitormain body 120.

[0102] The auxiliary link members 100 and 110 are bar-shaped, and arecombined to the first and second link supporting parts 42 and 93,respectively, in parallel. In each of the first and second linksupporting parts 42 and 93 are provided auxiliary link accommodatingparts 42 c and 93 d, respectively, and a plurality of pin holes 42 b and93 b spaced from each other at a predetermined distance. The pin holes42 b and 93 b correspond to the auxiliary link accommodating parts 42 cand 93 d, respectively. On opposite ends of the auxiliary link members100 and 110 through holes 100 a and 110 a are positioned to correspondto the pin holes 42 b and 93 b, respectively.

[0103] Thus, in a state that both ends of the auxiliary link members 100and 110 are inserted into the first and second link supporting parts 42and 93, and the through holes 100 a and 110 a positioned on both ends ofthe auxiliary link members 100 and 110 respectively correspond to thepin holes 42 b and 93 b positioned on the first and second linksupporting parts 42 and 93, the auxiliary link members 100 and 110 arecoupled to the first and second link supporting parts 42 and 93,respectively, by a plurality of link coupling pins 102. Therefore, thepair of auxiliary link members 100 and 110 move in parallel with eachother.

[0104] Operation of each part of the monitor according to the presentinvention will be described below.

[0105] As shown in FIGS. 7A through 7D, the link member 10 is downwardlypressed along an arrow “B” in FIG. 7A. Then, the link member 10 isdownwardly rotated on the first and second hinge pins 33 and 44 (seeFIGS. 7B and 8B). Here, the link member 10 is slowly rotated because ofthe elasticity of the torsion spring 35 put on the first base hinge part30.

[0106] According to the downward-rotation of the link member 10, thesecond link supporting part 93 provided at the upper part 10 b of thelink member 10 is rotated, as shown in FIG. 7B, in a clockwise direction“C” at a predetermined angle by the auxiliary link members 100 and 110.Herein, because the rotation of the second link supporting part 93 islinked with the third hinge pin 94, and the third hinge pin 94 isrotated together with the supporter 55, the monitor main body 120 istilted at the predetermined angle. Here, the tilting angle of themonitor main body 120 is relatively small. Additionally, the rotationangle of the monitor main body 120 may be adjusted by altering a lengthand coupling position of the auxiliary link members 100 and 110. In theforegoing description, the reason that the third hinge pin 94 is rotatedtogether with the supporter 55 is that the third hinge pin 94 and thethird pin accommodating part 91 of the supporter 55 are rotatablycombined by force stronger than the torque due to the weight of themonitor main body 120.

[0107] In a state of the monitor as illustrated in FIG. 7B, if the linkmember 10 is more downwardly pressed along an arrow “D,” the link member10 is slowly rotated because of the elasticity of the torsion spring 35until the first and second stoppers 51 a and 51 b provided at the firstand second base hinge parts 30 and 40 are engaged with the projections52 a and 52 b each formed around the first and second boss accommodatingpart 32 and 42 a (see FIG. 8C). In this state, the link member 10 is notdownwardly rotated anymore, as illustrated in FIG. 7C. Here, the secondlink supporting part 93 is rotated in a clockwise direction “E” beyondthe state as illustrated in FIG. 7B.

[0108] In the state of the monitor illustrated in FIG. 7C, to fold themonitor main body 120 on the base member 130, the monitor main body 120,which is stopped in the state that the projection 62 a of therotation-restricting washer 62 is engaged with the projection 63 a ofthe flat spring 63 fastened to the supporter 55, should be backwardlypressed against the base member 130 enough to deform the projection 63 aof the flat spring 63 elastically. The projection 62 a of therotation-restricting washer 62 is thereby allowed to rotate over theprojection 63 a of the flat spring 63 and to be engaged with the otherside of the third stopper 61. Accordingly, the monitor main body 120 iscompletely laid on the base member 130 (see FIGS. 7D and 9D).

[0109] A process of altering the monitor from the state as shown in FIG.7D (together with FIGS. 8C and 9D) into the state as shown in FIG. 7A isperformed in a reverse order to the description as described above.

[0110] As described above, because the monitor main body 120 iscompletely laid on the base member 130, a packing volume of the monitoris decreased, thereby decreasing costs to keep and carry the monitor.

[0111]FIG. 10 is a schematic view illustrating cables arranged in thelink member 10 of the monitor. As shown therein, on the rear of the linkmember 10, a cable accommodating part 10 c to accommodate the cables 153of the cable assembly 150 is provided. The first cable ports 151 of thecable assembly 150 are fastened to the port receiving parts 133 bprovided in the base member 130, and the second cable port 152 thereofis connected to a part of the monitor main body 120. In the first hingeholder 83 of the link member 10 and the first hinge accommodating part81 of the supporter 55 are provided cable accommodating grooves 55 b and82, respectively, to accommodate and guide the cables 153 (see FIG. 6).Thus, the cables 153 provided between the monitor main body 120 and thebase member 130 are attached on the link member 10 to be accommodated inthe link assembly 1.

[0112]FIGS. 11A and 11B are side views illustrating the monitor beingmounted on a wall. As shown therein, the base bracket 140 is fastened toa wall 160 with bolts 147. The hook holders 132 a of the base member 130are hung on the hooks 141 of the base bracket 140. Therefore, themonitor may be detachably mounted on the wall 160.

[0113]FIGS. 12A and 12B are side views illustrating the monitor beingmounted on an arm stand. As shown therein, the hooks 141 of the basebracket 140 are inserted in the hook holders 132 a of the base member130, thereby combining the base bracket 140 and base member 130.Further, a monitor supporting part 171 provided at an upper part of thearm stand 170 is formed with a plurality of bracket combining holes 173according to VESA. The base member 130 combined with the base bracket140 is put on the monitor supporting part 171. Thereafter, bolts 172 arecombined to the third combining holes 3 a formed on the lower linkmember cover 3 at a rear of the monitor supporting part 171 by passingthrough the bracket combining holes 173 of the monitor supporting part171 and the second combining holes 145 of the base bracket 140.Therefore, the monitor may be easily mounted on various arm standsaccording to the VESA, and both the link member 10 and the base member130 may be combined to the monitor supporting part 171 of the arm stand170.

[0114] In the foregoing description, the torsion spring 35 allowing forthe slow rotation of the link member 10 is provided in the first basehinge part 30. However, the torsion spring 35 may be provided in atleast one of the first and second base hinge parts 30 and 40,respectively. Further, the tilt restricting device 50 is provided in thesecond base hinge part 40. However, the tilt restricting device 50 maybe provided in at least one of the first and second base hinge parts 30and 40, respectively.

[0115] Further, the monitor angle restricting device 60 restricting theangle adjustment of the monitor may be provided in the first monitorhinge part 80.

[0116]FIGS. 13A through 13C show a monitor having a link assembly and abase member, according to another embodiment of the present invention.

[0117] As shown in FIGS. 13A through 13C, the monitor includes a basemember 21, a main body 22 having a screen 22 a to display a picture, alink member 310 linking the base member 21 with the main body 22, a basehinge 220 rotatably connecting a lower part 310 a of the link member 310with the base member 21, and a monitor hinge 270 rotatably connecting anupper part 310 b of the link member 310 with the main body 22.

[0118] The link member 310 rotates against the base member 21 within apredetermined angle range. The range of the rotation angle is determinedbased on regulation requirement in various nations, for example, 0°through 65°.

[0119] A base hinge 220 is provided between first and second fixingbrackets 24 and 26 which are spaced from each other at a predetermineddistance and fastened on the base member 21 with bolts 27. The basehinge 220 includes first and second base hinge parts 230 and 240rotatably connecting both edges of the lower part 310 a of the linkmember 310 with the first and second fixing brackets 24 and 26,respectively.

[0120] The first base hinge part 230 (see FIGS. 13B and 13C) includes afirst pin accommodating part 231 formed on a right side of the lowerpart 310 a of the link member 310, a boss accommodating part 232 formedon the first fixing bracket 24, and a first hinge pin 233 having firstand second ends coupled to the first pin accommodating part 231 and theboss accommodating part 232, respectively.

[0121] A first end 233 a of the first hinge pin 233 is rotatablyinserted into the first pin accommodating part 231 and has apredetermined friction therebetween. A second end 233 b of the firsthinge pin 233 is nonrotationally fitted into the boss accommodating part232. Thus, the first end 233 a of the first hinge pin 233 and the firstpin accommodating part 231 have circular shaped sections. The second end233 b of the hinge pin 233 and the boss accommodating part 232 havenoncircular shaped sections. Herein, the friction between the firsthinge pin 233 and the first pin accommodating part 231 prevents the linkmember 310 from being downwardly rotated due to the weight of the mainbody 22 against the base member 21.

[0122] On the first hinge pin 233 a first torsion spring 235 is placed.One end of the first torsion spring 235 is positioned at the right sideof the lower part 310 a of the link member 310 on which the first pinaccommodating part 231 is formed, and the other end thereof ispositioned at the first fixing bracket 24.

[0123] The first torsion spring 235 provides elasticity acting in anopposite direction to a downward rotation of the link member 30 againstthe base member 21. The first torsion spring 235 provides elasticityapproximately equal to torque due to the weight of the main body 22 inthe base hinge 220. Further, because there is the friction between thefirst hinge pin 233 and the first hinge accommodating part 231 providedin the first base hinge part 230, and a friction between a second hingepin 244 and a second hinge accommodating part 241 (to be describedlater) provided in the second base hinge part 240, the link member 310is stopped in the upwardly or downwardly rotated state. Therefore, inorder to rotate the link member 310 upwardly or downwardly against thebase member 21, the link member 310 is pressed by a force stronger thanthe friction of the first and second base hinge parts 230 and 240.

[0124] The second base hinge part 240 (see FIGS. 13B and 13C) includesthe second pin accommodating part 241 formed on a left side of the lowerpart 310 a of the link member 310, a first link supporting part 242combined to the second fixing bracket 26 and formed with a splineaccommodating part 242 a therein, and the second hinge pin 244 havingfirst and second ends coupled to the second pin accommodating part 241and the spline accommodating part 242 a, respectively.

[0125] The first end 244 a of the second hinge pin 244 has a circularshaped section and is rotatably inserted into the second pinaccommodating part 241 and has a predetermined friction therebetween.The second end 244 b of the second hinge pin 244 is nonrotationallyfitted into the spline accommodating part 242 a. Here, the second end244 b of the second hinge pin 244 is splined so as to be matched to thespline accommodating part 242 a of the first link supporting part 242.Herein, the friction between the second hinge pin 244 and the second pinaccommodating part 241 prevents the link member 310 from beingdownwardly rotated due to the weight of the main body 22 against thebase member 21.

[0126] Corresponding to the first torsion spring 235 provided in thefirst base hinge part 230 to keep the link member 310 in place, on thesecond base hinge part 240 is placed a rotation-angle restricting device250 to restrict a rotation of the link member 310 against the basemember 21 within a predetermined range. The rotation-angle restrictingmeans 250 is designed to be fit for rotation angle regulations accordingto VESA.

[0127] The rotation-angle restricting device 250 (see FIGS. 13C and 18A)includes a pair of first stoppers 251 formed at the left side of thelower part 310 a of the link member 310 around the second pinaccommodating part 241 to face each other. The rotation-anglerestricting device 250 also includes a first rotation-restricting washer252 placed on the second hinge pin 244 including a pair of projections252 a to be selectively engaged with the first stoppers 251 according toa rotation direction of the link member 310.

[0128] On the first rotation-restricting washer 252 is formed anoncircular-shaped through hole 252 b. Thus, into the through hole 252 bof the first rotation-restricting washer 252 is inserted the secondhinge pin 244. Therefore, if the link member 310 is downwardly pressedagainst the base member 21, the link member 310, rotatably combined tothe first and second hinge pins 233 and 244, is downwardly rotated untilthe first stoppers 251 are engaged with the projections 252 a of thefirst rotation-restricting washer 252 at a downward rotation limitposition (see FIG. 18C).

[0129] To the contrary, if the link member 310 is upwardly pressed fromthe base member 21, the link member 310 is upwardly rotated by the firstand second hinge pins 233 and 244 until the first stoppers 251 areengaged with the projections 252 a of the first rotation-restrictingwasher 252 at an upward-rotation limit position (see FIG. 18A).

[0130] Thus, the rotation angle of the link member 310 against the basemember 21 may be determined by the rotation-angle restricting device250. Therefore, if the rotation angle of the link member 310 isdifferent in various nations, the rotation angle of the link member 310may be properly designed as necessary by altering sizes of theprojections 252 a and the first stoppers 251.

[0131] At an upper part 310 b of the link member 310 is provided amonitor hinge 270 (see FIG. 13A) by which the monitor main body 22 isrotated against the link member 310 within a predetermined angle range.The range of the rotation angle may be properly determined based onregulation requirements in various nations, for example, −5° through30°.

[0132] The monitor hinge 270 includes first and second monitor hingeparts 280 and 290 rotatably combined to opposite edges of a supporter255 fastened to the main body 22 with bolts 257.

[0133] The first monitor hinge part 280 (see FIGS. 13B and 13C) includesa third pin accommodating part 281 formed on a right side of thesupporter 255, a fourth pin accommodating part 282 formed at a rightside of the upper part 310 b of the link member 310, and a third hingepin 283 to be inserted in the third and fourth pin accommodating parts281 and 282. Herein, a first end 283 a of the third hinge pin 283 isrotatably inserted in the third pin accommodating part 281 to allow themain body 22 to rotate. A second end 283 b of the third hinge pin 283 isfixedly press-fitted in the fourth pin accommodating part 282.

[0134] The second monitor hinge part 290 (see FIGS. 13B and 13C)includes a fifth pin accommodating part 291 formed on a left side of thesupporter 255, a sixth pin accommodating part 292 formed at a left sideof the upper part 310 b of the link member 310, a second link supportingpart 293 rotatably inserted in the sixth pin accommodating part 92 froman outside of the upper part 310 b of the link member 310 and formedwith a spline accommodating part 293 a. The second monitor hinge part290 also includes a fourth hinge pin 294 having a first end 294 ainserted in the fifth pin accommodating part 291 of the supporter 255and a second end 294 b matched to the spline accommodating part 293 a ofthe second link supporting part 293.

[0135] Like the first, second and third hinge pins 233, 244 and 283, thefirst end 294 a of the fourth hinge pin 294 is rotatably inserted in thefifth pin accommodating part 291 formed on the supporter 255, having apredetermined friction therebetween. The second end 294 b of the fourthhinge pin 294 is nonrotationally matched to the spline accommodatingpart 293 a of the second link supporting part 293. Further, the secondlink supporting part 293 combined with the second end 294 b of thefourth hinge pin 294 is also rotatably inserted in the sixth pinaccommodating part 292. A hinge combination between the second linksupporting part 293 and the sixth pin accommodating part 292 isinterlocked with auxiliary link members 2100 and 2110 (to be describedlater). Herein, a friction between the fourth hinge pin 294 and the mainbody 22 prevents the link member 310 from being downwardly rotated dueto weight of the main body 22 against the base member 21. Therefore, thefriction should be stronger than the torque due to the weight of themain body 22.

[0136] In the second monitor hinge part 290, as in the rotation-anglerestricting device 250 restricting the rotation of the link member 310against the base member 21 within the predetermined angle range, amonitor angle restricting device 260 is provided to restrict therotation of the main body 22 against the link member 310 within apredetermined angle range. The monitor angle restricting device 620 isdesigned to be fit for the rotatable angle of the main body 22 againstthe link member 310.

[0137] The monitor angle restricting device 260 (see FIG. 13C) includesan arc-shaped second stopper 261 protruding from the left side of thesupporter 255 adjacent to the fifth pin accommodating part 291, a secondrotation-restricting washer 262 placed on the fourth hinge pin 294 andhaving a projection 262 a to be engaged with the second stopper 261according to the rotation direction of the main body 22, and a thirdstopper 263 combined to the left side of the supporter 55 and locked onand released from the projection 262 a.

[0138] On the second rotation-restricting washer 262 is formed anoncircular-shaped through hole 262 b. The through hole 262 b of thesecond rotation-restricting washer 262 is fixedly matched to the fourthhinged pin 294, and therefore the second rotation-restricting washer 262is rotated together with the fourth hinge pin 294.

[0139] The third stopper 263 is rotatably coupled to the left side ofthe supporting part with a bolt 267 adjacent to the fifth pinaccommodating part 291. The third stopper 263 is employed to adjust anangle of the main body 22 while the monitor is used, and to fold themain body 22 on the base member 21 when the monitor is packed.

[0140] Between the left side of the supporter 255 and the third stopper263 a second torsion spring 265 is provided. The second torsion spring265 (to be described later in more detail) is employed to restore thethird stopper 263 to an original position.

[0141] Between the second link supporting part 293 and the secondrotation-restricting washer 262 a spacer 298 is provided. The spacer 298is employed to keep a space between the second link supporting part 293and the second rotation-restricting washer 262 at a predetermineddistance.

[0142] Thus, if the main body 22 is vertically pressed against the linkmember 310 enough to overcome the friction between the fourth hinge pin294 and the supporter 255, the main body 22 is rotated on the third andfourth hinge pins 283 and 294, respectively. The main body 22 may berotated until the projection 262 a of the second rotation-restrictingwasher 262 is engaged with one side of the second stopper 261 or a firstend 263 a of the third stopper 263 (see FIG. 19A or 19B). Therefore, ifan allowable rotation angle of the main body 22 is different in variousnations, the rotation angle of the main body 22 may be properly designedas necessary by altering sizes of the projection 262 a and the secondstopper 261 and by altering a position of the third stopper 263.

[0143] Further, to fold the main body 22 to the base member 21 in aparallel position, the main body 22 is rotated until the projection 262a is engaged with the other side of the second stopper 261 (see FIG.19D) without being engaged with the first end 263 a of the third stopper263 (see the dotted line on FIG. 19C).

[0144] To restore the third stopper 263 to an original position, thesecond torsion spring is provided in the third stopper 263. Thus, afterthe projection 262 a passes the third stopper 263 while the thirdstopper 263 is rotated on the bolt 267 by pushing a second end 263 bthereof (see the rotation from the solid line to the dotted line in FIG.19C), if the second end 263 b of the third stopper 263 is released bypushing, the third stopper 263 is restored to the original position bythe elasticity of the second torsion spring 265.

[0145] With the configuration described above, the link member 310rotates against the base member 21 at a predetermined angle, and themain body 22 rotates against the link member 310 at a predeterminedangle.

[0146] Further, the link member 310 and the main body 22 may not beindividually rotated. That is, the main body 22 may be rotated at thepredetermined angle by gearing with the rotation of the link member 310against the base member 21.

[0147] To accomplish this structure, the present invention furtherincludes the auxiliary link members 2100 and 2110 to link the rotationof the link member 310 against the base member 21 with the rotation ofthe main body 22.

[0148] The auxiliary link members 2100 and 2110 are bar-shaped, and arecombined to the first and second link supporting parts 242 and 293,respectively, in parallel. In each of the first and second linksupporting parts 242 and 293, are provided a plurality of pin holesspaced from each other at a predetermined distance. The second linksupporting part 293 is provided with pin holes 293 b. Particularly, pinholes (not shown) of the first link supporting part 242 correspond topin holes 26 b formed on the second fixing bracket 26. On both ends ofthe auxiliary link members 2100 and 2110 are formed through holes 2100 aand 2110 a to correspond to the pin holes 293 b and 26 b, respectively.

[0149] Thus, in a state that the through holes 2100 a and 2110 a formedon both ends of the auxiliary link member 2100 and 2110 respectivelycorrespond to the pin holes formed on the first and second linksupporting parts 242 and 293 and the pin holes 26 b formed on the secondfixing bracket 26, the auxiliary link member 2100 and 2110 are coupledto the first and second link supporting parts 242 and 293, respectively,by a plurality of link fixing pins 2120. Therefore, the pair ofauxiliary link member 2100 and 2110 move in parallel with each other.

[0150] An operation of the monitor according to the present inventionwill be described hereinbelow.

[0151] In a state of the monitor illustrated in FIG. 14 (together withFIGS. 18A and 9A), the link member 310 is downwardly pressed along anarrow “B” in FIG. 14. Then, the link member 310 is downwardly rotated onthe first and second hinge pins 233 and 244 (see FIGS. 15 and 18B). Thelink member 310 is slowly rotated because of the elasticity of the firsttorsion spring 235 placed on the first base hinge part 230.

[0152] According to the downward rotation of the link member 310, thesecond link supporting part 293 provided at the upper part 310 b of thelink member 310 is rotated, as shown in FIG. 15, in a clockwisedirection “C” at a predetermined angle by the auxiliary link members2100 and 2110. Herein, the rotation of the second link supporting part293 rotates the third hinge pin 283, and the fourth hinge pin 294 andthe supporter 255 are interlocked by the friction therebetween, so thatthe main body 22 is also rotated at the predetermined angle. Therotation angle of the main body 22 is comparatively small. Additionally,the rotation angle of the main body 22 may be adjusted by altering alength and a coupling position of the auxiliary link members 2100 and2110.

[0153] In the state of the monitor illustrated in FIG. 15, if the linkmember 310 is more downwardly pressed along the arrow “D”, the linkmember 310 is slowly rotated because of the elasticity of the firsttorsion spring 235 until one of the first stoppers 251 provided at thesecond base hinge part 240 is engaged with the projections 252 a of thefirst rotation-restricting washer 252 (see FIG. 18C). Here, the linkmember 310 is not downwardly rotated anymore, as is illustrated in FIG.16. At this time, the second link supporting part 293 is rotated in aclockwise direction “E” beyond the state as shown in FIG. 15.

[0154] In the state of the monitor illustrated in FIG. 16, to fold themain body 22 on the base member 21, the projection 262 a passes thefirst end 263 a of the third stopper 263 while the third stopper 263 isrotated on the bolt 267 by pushing the second end 263 b thereof. Asshown in FIG. 19C, the third stopper 263 moves from the solid line tothe dotted line.

[0155] The upper part of the main body 22 is downwardly pressed towardthe base member 21, and then the main body 22 is rotated on the thirdand fourth hinge pins 283 and 294, respectively, so that the main body22 is, as shown in FIG. 17, laid on the base member 21. Here, theprojection 262 a of the second rotation-restricting washer 262 passesthe first end 263 a of the third stopper 263 and then moves as far asthe second stopper 261 (see FIG. 19D).

[0156] A process of altering the monitor from the state as shown in FIG.17 (together with FIGS. 18C and 19D) into the state as shown in FIG. 14is performed in reverse to the order described above.

[0157]FIG. 20 is a perspective view illustrating a rear of a base memberof the monitor, according to another embodiment of the presentinvention. As shown in FIG. 20, the base member 130 includes a pluralityof combining holes 132 b formed according to (VESA). The combining holes132 b are formed to correspond to the plurality of second combiningholes 145 of the base bracket 140 so as to combine with an arm stand170.

[0158] As described above, because the main body 22 is completely laidon the base member 21, the packing volume of the monitor is decreased,thereby decreasing the cost of packing the monitor and a space to keepand carry the monitor.

[0159] In the above description, the first torsion spring 235 and therotation-angle restricting device 250 are provided at the first andsecond base hinge parts 230 and 240, respectively. However, positionsthereof may be exchanged.

[0160] Further, the monitor angle restricting device 260 restricting theangle adjustment of the monitor main body 22 may be provided at thefirst monitor hinge part 280.

[0161] As described above, the present invention provides a monitor, inwhich a base member is installed onto an inclined plane such as a wall,an arm stand, etc., and more particularly, a monitor which is easilyinstalled onto various arm stands according to VESA.

[0162] Further, the present invention provides a monitor which properlyadjusts a tilting angle of a main body against a base member, anddecreases costs to keep and carry the monitor by decreasing the packingvolume thereof.

[0163] Although a few embodiments of the present invention have beenshown and described, it would be appreciated by those skilled in the artthat changes may be made in these embodiments without departing from theprinciples and spirit of the invention, the scope of which is defined inthe appended claims and their equivalents.

1. A monitor having a monitor main body and a base member to support themonitor main body, comprising: a link member disposed between themonitor main body and the base member; a base hinge coupling the linkmember, which is to be rotated within a predetermined angle against thebase member, with the base member; a monitor hinge coupling the monitormain body, which is to be rotated against the link member, with the linkmember; and an auxiliary link member to link the rotation of the linkmember against the base member with the rotation of the monitor mainbody.
 2. The monitor according to claim 1, further comprising: first andsecond fixing brackets spaced from each other at a predetermineddistance and installed on the base member; and first and second basehinge parts provided on the base hinge to rotatably combine oppositesides of a lower end part of the link member to the first and secondfixing brackets.
 3. The monitor according to claim 2, wherein the firstbase hinge part comprises: a first pin accommodating part formed on aside of the link member; a first boss accommodating part formed on thefirst fixing bracket and having a noncircular section; and a first hingepin having a first end rotatably inserted in the first pin accommodatingpart and a second end fitted into the first boss accommodating part. 4.The monitor according to claim 2, wherein the first fixing bracketcomprises: a spring supporting part protruding from an inside thereoftoward the second fixing bracket, and on the spring supporting part isplaced a torsion spring elastically acting in an opposite direction to adownward rotation of the link member against the base member.
 5. Themonitor according to claim 2, wherein the second base hinge partcomprises: a second pin accommodating part formed on a side of the linkmember; a first link supporting part coupled to the second fixingbracket and formed with a second boss accommodating part therein; and asecond hinge pin having a first end rotatably inserted in the second pinaccommodating part and a second end engaged with the second bossaccommodating part of the first link supporting part.
 6. The monitoraccording to claim 5, further comprising: a tilt restricting device isplaced on at least one of the first and second base hinge parts torestrict the rotation of the link member against the base member withina predetermined angle range.
 7. The monitor according to claim 6,wherein the tilt restricting device comprises: first and second stoppersformed on opposite sides of the link member adjacent to the first andsecond pin accommodating part to face each other; and a pair ofprojections provided on the first and second boss accommodating partsand selectively engaged with the first and second stoppers according toa rotation direction of the link member.
 8. The monitor according toclaim 1, further comprising: a supporter combined to the monitor mainbody, wherein the monitor hinge includes first and second monitor hingeparts to rotatably combine opposite sides of an upper end part of thelink member to the supporter.
 9. The monitor according to claim 8,wherein the first monitor hinge part comprises: a first hingeaccommodating part grooved on one side of the supporter; a first hingeholder formed on one side of the upper end part of the link member; andan accommodating part cover placed on an opening of the first hingeaccommodating part in a state that the first hinge holder is arranged inthe first hinge accommodating part.
 10. The monitor according to claim9, wherein the second monitor hinge part comprises: a third pinaccommodating part formed on the other side of the supporter; a secondhinge accommodating part formed on the other side of the upper end partof the link member; a second hinge holder rotatably inserted in thesecond hinge accommodating part from an outside of the link member; asecond link supporting part including the second hinge holder, and athird boss accommodating part formed inside the second hinge holder; anda third hinge pin having a first end rotatably inserted in the third pinaccommodating part of the supporter and a second end fitted into thethird boss accommodating part of the second link supporting part. 11.The monitor according to claim 10, wherein the second monitor hinge partcomprises a monitor angle restricting device to restrict a tilt of themonitor main body against the link member within a predetermined anglerange.
 12. The monitor according to claim 11, wherein the monitor anglerestricting device comprises: a third stopper of an arced shapeprotruding from an opening of the third pin accommodating part formed onthe supporter; a rotation-restricting washer placed on the third hingepin and having a projection to be selectively engaged with the thirdstopper according to a rotation direction of the monitor main body; anda flat spring combined to a side adjacent to the third pin accommodatingpart of the supporter to restrict a rotation of the supporter bypressing the projection of the rotation-restricting washer.
 13. Themonitor according to claim 12, wherein the flat spring includes aprojection elastically deformed and fastened to the other side of thesupporter.
 14. The monitor according to claim 10, wherein the auxiliarylink member is provided in pairs in parallel with each other andcombined to the first and second link supporting parts.
 15. The monitoraccording to claim 14, further comprising: a plurality of pin holesprovided on each of the first and second link supporting parts, andspaced from each other at a predetermined distance; a plurality ofthrough holes formed on opposite ends of each auxiliary link member tobe communicated with the pin holes, respectively; and link fixing pinsto be inserted into the through holes and the pin holes.
 16. The monitoraccording to claim 9, further comprising: a cable accommodating partprovided on the link member to accommodate cables connecting at leastone first cable port provided in the base member with at least onesecond cable port connected to the monitor main body; and a cableaccommodating groove provided in the first hinge holder and the firsthinge accommodating part of the supporter to accommodate the cables. 17.The monitor according to claim 1, wherein the monitor main body isfolded on the base member, and the link member is accommodated in a linkmember accommodating part formed in a middle of a surface of the basemember.
 18. The monitor according to claim 10, wherein the second linksupporting part provided in the upper end part of the link member isrotated by the auxiliary link member when the link member is rotated,and the monitor main body is tilted together with the second linksupporting part at the same angle.
 19. The monitor according to claim 3,further comprising: a first torsion spring placed on the first hingepin, the first torsion spring having a first end coupled to the one sideof the lower end part of the link member and a second end coupled to thefirst fixing bracket to elastically act in an opposite direction to adownward rotation of the link member against the base member.
 20. Themonitor according to claim 5, further comprising: a rotation-anglerestricting device, on which the second base hinge part to restrict therotation of the link member against the base member within apredetermined angle range, the rotation-angle restricting devicecomprising: a pair of first stoppers formed on the another side of thelower end part of the link member adjacent to the second pinaccommodating part to face each other; and a first rotation-restrictingwasher placed on the second hinge pin and having a pair of projectionsto be selectively engaged with the pair of first stoppers according tothe rotation direction of the link member.
 21. The monitor according toclaim 20, wherein the first rotation-restricting washer is fitted to thesecond hinge pin.
 22. The monitor according to claim 8, wherein thefirst monitor hinge part comprises: a third pin accommodating partformed on one side of the supporter; a fourth pin accommodating partformed on one side of the upper end part of the link member; and a thirdhinge pin having ends inserted in the third and fourth pin accommodatingparts, respectively.
 23. The monitor according to claim 22, wherein thesecond monitor hinge part comprises: a fifth pin accommodating partformed on the other side of the supporter; a sixth pin accommodatingpart formed on the other side of the upper end part of the link member;a second link supporting part rotatably inserted in the sixth pinaccommodating part from an outside of the link member and formed with aspline accommodating part; and a fourth hinge pin having a first endfitted into the fifth pin accommodating part of the supporter and asecond end engaged with the spline accommodating part of the second linksupporting part.
 24. The monitor according to claim 23, wherein thesecond monitor hinge part is provided with a monitor angle restrictingdevice to restrict the rotation of the main body against the link memberwithin a predetermined angle range, the monitor angle restricting devicecomprising: a second stopper of an arced shape protruding from the otherside of the supporter adjacent to the fifth pin accommodating part; asecond rotation-restricting washer placed on the fourth hinge pin andhaving a projection to be engaged with the second stopper according to arotation direction of the main body; and a third stopper combined to theother side of the supporter and locked on and released from theprojection of the second rotation-restricting washer.
 25. The monitoraccording to claim 24, further comprising: a second torsion springcombined to the other side of the supporter, and elastically biasing thethird stopper in a direction in which the third stopper is engaged withthe projection of the second rotation-restricting washer.
 26. Themonitor according to claim 24, further comprising: a spacer providedbetween the second link supporting part and the secondrotation-restricting washer.
 27. The monitor according to claim 6,wherein the predetermined angle range is 0° through 65°.
 28. The monitoraccording to claim 7, wherein a rotation angle of the link member isdetermined based on a size of the first and second stoppers and the pairof projections.
 29. The monitor according to claim 1, wherein themonitor main body is tilted against the link member within apredetermined angle range of −5° through 30°.
 30. The monitor accordingto claim 10, wherein the third hinge pin is rotatably combined to thethird pin accommodating part of the supporter by a force stronger than atorque due to a weight of the monitor main body.
 31. The monitoraccording to claim 10, wherein a rotation between the second hingeholder and the second hinge accommodating part is achieved by theauxiliary member which is combined to and geared with the second linksupporting part.
 32. The monitor according to claim 12, wherein therotation-restricting washer comprises a through hole fixedly matched tothe third hinged pin, thereby allowing the rotation-restricting washerto rotate together with the third hinge pin.
 33. The monitor accordingto claim 12, wherein when the monitor main body is forwardly pressedagainst the link member, the supporter is forwardly rotated on the firsthinge holder and the third hinge pin at a predetermined angle until theprojection of the rotation-restricting washer is engaged with the thirdstopper.
 34. The monitor according to claim 13, wherein when the monitormain body is backwardly pressed against the link member, the supporteris backwardly rotated on the first hinge holder and the third hinge pinat a predetermined angle until the projection of therotation-restricting washer is engaged with the projection of the flatspring.
 35. The monitor according to claim 13, wherein a tilting angleof the monitor main body is determined based on a size of the projectionof the rotation-restricting washer and the third stopper, and a positionof the flat spring.
 36. The monitor according to claim 15, wherein arotation angle of the monitor main body is adjusted by altering a lengthand coupling position of the auxiliary member.
 37. The monitor accordingto claim 1, further comprising: a base bracket combined to the basemember to allow the base member to be installed on an inclined plane;and a monitor supporting part having a plurality of bracket combiningholes to combine to the base bracket, thereby allowing the monitor to beinstalled on the inclined plane.
 38. A monitor having a monitor mainbody and a base member to support the monitor main body, comprising: alink member disposed between the monitor main body and the base member;a base hinge coupling the link member, which is to be rotated within apredetermined angle against the base member, with the base member; amonitor hinge coupling the monitor main body, which is to be rotatedagainst the link member, with the link member; an auxiliary link memberto link the rotation of the link member against the base member with therotation of the monitor main body; and a base bracket combined to thebase member to allow the base member to be installed on an inclinedplane.
 39. The monitor according to claim 38, further comprising: hookholders provided in the base member, wherein the base bracket isdetachably combined to the base member and includes hooks to hook to thehook holders provided in the base member.
 40. The monitor according toclaim 39, wherein the base bracket includes first combining holes toinstall the base bracket on the inclined plane.
 41. The monitoraccording to claim 40, wherein the base bracket includes secondcombining holes, and the link member includes third combining holescorresponding to the second combining holes to combine the base bracketand the link member.
 42. The monitor according to claim 41, wherein thesecond combining holes of the base bracket and the third combining holesof the link member are formed according to VESA (Video ElectronicStandard Association).
 43. A monitor having a monitor main body and abase member to support the monitor main body, comprising: a link memberdisposed between the monitor main body and the base member; a base hingecoupling the link member, which is to be rotated within a predeterminedangle against the base member, with the base member; a monitor hingecoupling the monitor main body, which is to be rotated against the linkmember, with the link member; an auxiliary link member to link therotation of the link member against the base member with the rotation ofthe monitor main body; a base bracket combined to the base member toallow the base member to be installed on an inclined plane; and amonitor supporting part having a plurality of bracket combining holes tocombine to the base bracket, thereby allowing the monitor to installedon the inclined plane.
 44. A monitor having a monitor main body and abase member to support the monitor main body, comprising: a link memberdisposed between the monitor main body and the base member, the basemember including combining holes formed according to VESA (VideoElectronic Standard Association); a base hinge coupling the link member,which is to be rotated within a predetermined angle against the basemember, with the base member; a monitor hinge coupling the monitor mainbody, which is to be rotated against the link member, with the linkmember; and an auxiliary link member to link the rotation of the linkmember against the base member with the rotation of the monitor mainbody.